OOW-3000-L3.2

IRPCS — lights, shapes and sound signals

OOW-3000-M3 · Oral examination preparation · OOW-3000-M3-A The MCA oral: IRPCS, watchkeeping and ship handling, emergencies, and legislation.

Recognising a vessel's lights, shapes and sound signals is how the OOW identifies what is out there at night or in poor visibility, and it is heavily tested in the oral. This lesson covers the key recognition patterns and the signals used to communicate intention and warn of danger.